public function execute(PhutilArgumentParser $args)
 {
     $iterator = $this->buildIterator($args);
     if (!$iterator) {
         throw new PhutilArgumentUsageException(pht('Either specify a list of files to encode, or use --all to ' . 'encode all files.'));
     }
     $force = (bool) $args->getArg('force');
     $format_list = PhabricatorFileStorageFormat::getAllFormats();
     $format_list = array_keys($format_list);
     $format_list = implode(', ', $format_list);
     $format_key = $args->getArg('as');
     if (!strlen($format_key)) {
         throw new PhutilArgumentUsageException(pht('Use --as <format> to select a target encoding format. Available ' . 'formats are: %s.', $format_list));
     }
     $format = PhabricatorFileStorageFormat::getFormat($format_key);
     if (!$format) {
         throw new PhutilArgumentUsageException(pht('Storage format "%s" is not valid. Available formats are: %s.', $format_key, $format_list));
     }
     $key_name = $args->getArg('key');
     if (strlen($key_name)) {
         $format->selectMasterKey($key_name);
     }
     $engines = PhabricatorFileStorageEngine::loadAllEngines();
     $failed = array();
     foreach ($iterator as $file) {
         $monogram = $file->getMonogram();
         $engine_key = $file->getStorageEngine();
         $engine = idx($engines, $engine_key);
         if (!$engine) {
             echo tsprintf("%s\n", pht('%s: Uses unknown storage engine "%s".', $monogram, $engine_key));
             $failed[] = $file;
             continue;
         }
         if ($engine->isChunkEngine()) {
             echo tsprintf("%s\n", pht('%s: Stored as chunks, no data to encode directly.', $monogram));
             continue;
         }
         if ($file->getStorageFormat() == $format_key && !$force) {
             echo tsprintf("%s\n", pht('%s: Already encoded in target format.', $monogram));
             continue;
         }
         echo tsprintf("%s\n", pht('%s: Changing encoding from "%s" to "%s".', $monogram, $file->getStorageFormat(), $format_key));
         try {
             $file->migrateToStorageFormat($format);
             echo tsprintf("%s\n", pht('Done.'));
         } catch (Exception $ex) {
             echo tsprintf("%B\n", pht('Failed! %s', (string) $ex));
             $failed[] = $file;
         }
     }
     if ($failed) {
         $monograms = mpull($failed, 'getMonogram');
         echo tsprintf("%s\n", pht('Failures: %s.', implode(', ', $monograms)));
         return 1;
     }
     return 0;
 }
 public function execute(PhutilArgumentParser $args)
 {
     $iterator = $this->buildIterator($args);
     if (!$iterator) {
         throw new PhutilArgumentUsageException(pht('Either specify a list of files to cycle, or use --all to cycle ' . 'all files.'));
     }
     $format_map = PhabricatorFileStorageFormat::getAllFormats();
     $engines = PhabricatorFileStorageEngine::loadAllEngines();
     $key_name = $args->getArg('key');
     $failed = array();
     foreach ($iterator as $file) {
         $monogram = $file->getMonogram();
         $engine_key = $file->getStorageEngine();
         $engine = idx($engines, $engine_key);
         if (!$engine) {
             echo tsprintf("%s\n", pht('%s: Uses unknown storage engine "%s".', $monogram, $engine_key));
             $failed[] = $file;
             continue;
         }
         if ($engine->isChunkEngine()) {
             echo tsprintf("%s\n", pht('%s: Stored as chunks, declining to cycle directly.', $monogram));
             continue;
         }
         $format_key = $file->getStorageFormat();
         if (empty($format_map[$format_key])) {
             echo tsprintf("%s\n", pht('%s: Uses unknown storage format "%s".', $monogram, $format_key));
             $failed[] = $file;
             continue;
         }
         $format = clone $format_map[$format_key];
         $format->setFile($file);
         if (!$format->canCycleMasterKey()) {
             echo tsprintf("%s\n", pht('%s: Storage format ("%s") does not support key cycling.', $monogram, $format->getStorageFormatName()));
             continue;
         }
         echo tsprintf("%s\n", pht('%s: Cycling master key.', $monogram));
         try {
             if ($key_name) {
                 $format->selectMasterKey($key_name);
             }
             $file->cycleMasterStorageKey($format);
             echo tsprintf("%s\n", pht('Done.'));
         } catch (Exception $ex) {
             echo tsprintf("%B\n", pht('Failed! %s', (string) $ex));
             $failed[] = $file;
         }
     }
     if ($failed) {
         $monograms = mpull($failed, 'getMonogram');
         echo tsprintf("%s\n", pht('Failures: %s.', implode(', ', $monograms)));
         return 1;
     }
     return 0;
 }